Canon G1 X Mark II vs Sony A99
The Canon PowerShot G1 X Mark II and the Sony Alpha SLT-A99 are two digital cameras that were revealed to the public, respectively, in February 2014 and September 2012. The G1X Mark II is a fixed lens compact, while the A99 is a DSLR. The cameras are based on an 1.5-inch (G1X Mark II) and a full frame (A99) sensor. The Canon has a resolution of 13 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G1 X Mark II and the Sony Alpha SLT-A99? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
The side-by-side display below illustrates the physical size and weight of the Canon G1 X Mark II and the Sony A99. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A99 is considerably larger (90 percent) than the Canon G1 X Mark II. It is noteworthy in this context that the A99 is splash and dust-proof, while the G1X Mark II does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X Mark II has a lens built in, whereas the A99 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon G1 X Mark II||116 mm||74 mm||66 mm||553 g||240||n||Feb 2014||799|
|2.||Sony A99||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799|
|3.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649|
|4.||Canon XC10||125 mm||102 mm||122 mm||1040 g||370||n||Apr 2015||2,499|
|5.||Canon SX60||128 mm||93 mm||114 mm||650 g||340||n||Sep 2014||549|
|6.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549|
|7.||Canon S120||100 mm||59 mm||29 mm||217 g||230||n||Aug 2013||449|
|8.||Canon G1 X||117 mm||81 mm||65 mm||534 g||250||n||Jan 2012||799|
|9.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799|
|10.||Canon XSi||129 mm||98 mm||62 mm||524 g||500||n||Jan 2008||799|
|11.||Olympus Stylus 1||116 mm||87 mm||57 mm||402 g||410||n||Oct 2013||699|
|12.||Panasonic LX100||115 mm||66 mm||55 mm||393 g||300||n||Sep 2014||899|
|13.||Sony A9 II||129 mm||96 mm||76 mm||678 g||690||Y||Oct 2019||4,499|
|14.||Sony A99 II||143 mm||104 mm||76 mm||849 g||490||Y||Sep 2016||3,199|
|15.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399|
|16.||Sony A850||156 mm||117 mm||82 mm||895 g||880||Y||Aug 2009||1,999|
|17.||Sony A900||156 mm||117 mm||82 mm||895 g||880||Y||Sep 2008||2,999|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The G1X Mark II was launched at a lower price than the A99, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.
The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon G1 X Mark II features an 1.5-inch sensor and the Sony A99 a full frame sensor. The sensor area in the A99 is 225 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.85 and 1.0. The sensor in the G1X Mark II has a native 4:3 aspect ratio, while the one in the A99 offers a 3:2 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
With 24MP, the A99 offers a higher resolution than the G1X Mark II (13MP), but the A99 nevertheless has larger individual pixels (pixel pitch of 5.96μm versus 4.49μm for the G1X Mark II) due to its larger sensor. However, the G1X Mark II is a somewhat more recent model (by 1 year and 5 months) than the A99, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Sony A99 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A99 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon G1 X Mark II are 20.8 x 15.6 inches or 52.8 x 39.6 cm for good quality, 16.6 x 12.5 inches or 42.3 x 31.7 cm for very good quality, and 13.9 x 10.4 inches or 35.2 x 26.4 cm for excellent quality prints.
The Canon PowerShot G1 X Mark II has a native sensitivity range from ISO 100 to ISO 12800. The corresponding ISO settings for the Sony Alpha SLT-A99 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the A99 offers substantially better image quality than the G1X Mark II (overall score 31 points higher). The advantage is based on 3.5 bits higher color depth, 3.2 EV in additional dynamic range, and 1.4 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
| DXO |
|1.||Canon G1 X Mark II||1.5-inch||13.0||4160||3120||1080/30p||21.5||10.8||581||58|
|2.||Sony A99||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
|8.||Canon G1 X||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|11.||Olympus Stylus 1||1/1.7||11.8||3968||2976||1080/30p||20.7||11.6||179||51|
|12.||Panasonic LX100||Four Thirds||12.7||4112||3088||4K/30p||22.3||12.5||553||67|
|13.||Sony A9 II||Full Frame||24.0||6000||4000||4K/30p||25.0||14.0||3434||93|
|14.||Sony A99 II||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|16.||Sony A850||Full Frame||24.4||6048||4032||none||23.8||12.2||1415||79|
|17.||Sony A900||Full Frame||24.4||6048||4032||none||23.7||12.3||1431||79|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A99 provides a faster frame rate than the G1X Mark II. It can shoot movie footage at 1080/60p, while the Canon is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A99 has an electronic viewfinder (2359k dots), which can be very helpful when shooting in bright sunlight. In contrast, the G1X Mark II relies on live view and the rear LCD for framing. That said, the G1X Mark II can be equipped with an optional viewfinder – the EVF-DC1. The adjacent table lists some of the other core features of the Canon G1 X Mark II and Sony A99 along with similar information for a selection of comparators.
|1.||Canon G1 X Mark II||optional||n||3.0||1040||tilting||Y||1/4000s||5.2||Y||Y|
|8.||Canon G1 X||optical||n||3.0||922||Swivel||n||1/4000s||1.9||Y||Y|
|11.||Olympus Stylus 1||1440||n||3.0||1040||tilting||Y||1/2000s||7.0||Y||Y|
|13.||Sony A9 II||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y|
|14.||Sony A99 II||2400||Y||3.0||1229||full-flex||n||1/8000s||12.0||n||Y|
One difference between the cameras concerns the presence of an on-board flash. The G1X Mark II has one, while the A99 does not. While the built-in flash of the G1X Mark II is not very powerful, it can at times be useful as a fill-in light.Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.
The Canon G1 X Mark II has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The G1X Mark II writes its imaging data to SDXC cards, while the A99 uses SDXC or Memory Stick PRO Duo cards. The A99 features dual card slots, which can be very useful in case a memory card fails. In contrast, the G1X Mark II only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon PowerShot G1 X Mark II and Sony Alpha SLT-A99 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Canon G1 X Mark II||Y||stereo||mono||-||-||mini||2.0||Y||Y||-|
|8.||Canon G1 X||Y||stereo||mono||-||-||mini||2.0||-||-||-|
|11.||Olympus Stylus 1||Y||stereo||mono||-||-||micro||2.0||Y||-||-|
|13.||Sony A9 II||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y|
|14.||Sony A99 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y|
It is notable that the G1X Mark II offers wifi support, while the A99 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Sony A99 (unlike the G1X Mark II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the A99 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the G1X Mark II and the A99 have been discontinued, but can regularly be found used on eBay. The A99 was replaced by the Sony A99 II, while the G1X Mark II was followed by the Canon G1 X Mark III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Sony websites.
So what conclusions can be drawn? Is the Canon G1 X Mark II better than the Sony A99 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon PowerShot G1 X Mark II:
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with a built-in lens, while the A99 requires a separate lens.
- More compact: Is smaller (116x74mm vs 147x111mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the A99).
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Is somewhat more recent (announced 1 year and 5 months after the A99).
Advantages of the Sony Alpha SLT-A99:
- More detail: Has more megapixels (24 vs 13MP), which boosts linear resolution by 39%.
- Better image quality: Scores substantially higher (31 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (3.5 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (3.2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.4 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- Easier setting verification: Features a control panel on top to check shooting parameters.
- More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (6 vs 5.2 flaps/sec) to capture the decisive moment.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Longer lasting: Gets more shots (500 versus 240) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been on the market for longer (launched in September 2012).
If the count of individual advantages (bullet points above) is taken as a guide, the A99 is the clear winner of the contest (21 : 10 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Canon G1 X Mark II and the Sony A99 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G1X Mark II or the A99. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
|1.||Canon G1 X Mark II||3/5||+||77/100||4/5||4.5/5||Feb 2014||799|
|2.||Sony A99||5/5||..||84/100||4.5/5||4.5/5||Sep 2012||2,799|
|3.||Canon T6s||5/5||+||77/100||4.5/5||4.5/5||Feb 2015||649|
|4.||Canon XC10||..||..||80/100||..||..||Apr 2015||2,499|
|5.||Canon SX60||3/5||+ +||75/100||4/5||4.5/5||Sep 2014||549|
|6.||Canon G16||4/5||+||..||4.5/5||4.5/5||Aug 2013||549|
|7.||Canon S120||..||+ +||..||4.5/5||4.5/5||Aug 2013||449|
|8.||Canon G1 X||5/5||+||76/100||4/5||4.5/5||Jan 2012||799|
|9.||Canon T1i||..||+ +||74/100||4.5/5||4.5/5||Mar 2009||799|
|10.||Canon XSi||..||+ +||+ +||4/5||4.5/5||Jan 2008||799|
|11.||Olympus Stylus 1||..||+ +||..||4.5/5||4.5/5||Oct 2013||699|
|12.||Panasonic LX100||5/5||+ +||85/100||5/5||5/5||Sep 2014||899|
|13.||Sony A9 II||..||..||90/100||5/5||5/5||Oct 2019||4,499|
|14.||Sony A99 II||..||..||85/100||4.5/5||4.5/5||Sep 2016||3,199|
|15.||Sony A77||5/5||91/100||81/100||..||5/5||Aug 2011||1,399|
|16.||Sony A850||3/5||..||75/100||..||4.5/5||Aug 2009||1,999|
|17.||Sony A900||..||+ +||+ +||4.5/5||5/5||Sep 2008||2,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Canon G1 X Mark II vs Sony A99
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Canon G1 X Mark II||Sony A99|
|Camera Type||Fixed lens compact camera||Digital single lens reflex|
|Camera Lens||24-120mm f/2.0-3.9||Sony A mount lenses|
|Launch Date||February 2014||September 2012|
|Launch Price||USD 799||USD 2,799|
|Sensor Specs||Canon G1 X Mark II||Sony A99|
|Sensor Format||1.5" Sensor||Full Frame Sensor|
|Sensor Size||18.7 x 14.0 mm||35.8 x 23.8 mm|
|Sensor Area||261.8 mm2||852.04 mm2|
|Sensor Diagonal||23.4 mm||43 mm|
|Sensor Resolution||13 Megapixels||24 Megapixels|
|Image Resolution||4160 x 3120 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.49 μm||5.96 μm|
|Pixel Density||4.96 MP/cm2||2.82 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/60p Video|
|ISO Setting||100 - 12,800 ISO||100 - 25,600 ISO|
|ISO Boost||no Enhancement||50 - 25,600 ISO|
|Image Processor||DIGIC 6||BIONZ X|
|DXO Sensor Quality (score)||58||89|
|DXO Color Depth (bits)||21.5||25.0|
|DXO Dynamic Range (EV)||10.8||14.0|
|DXO Low Light (ISO)||581||1555|
|Screen Specs||Canon G1 X Mark II||Sony A99|
|Viewfinder Type||Viewfinder optional||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2359k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1229k dots|
|LCD Attachment||Tilting screen||Fully flexible screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon G1 X Mark II||Sony A99|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||5.2 shutter flaps/s||6 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||Lens-based stabilization||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon G1 X Mark II||Sony A99|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Geotagging||no internal GPS||GPS built-in|
|Body Specs||Canon G1 X Mark II||Sony A99|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||240 shots per charge||500 shots per charge|
116 x 74 x 66 mm
(4.6 x 2.9 x 2.6 in)
147 x 111 x 78 mm
(5.8 x 4.4 x 3.1 in)
|Camera Weight||553 g (19.5 oz)||812 g (28.6 oz)|
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